CVSS 3.1
7.1 highCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2021-3752
A use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Severity
- EPSS
- 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-362, CWE-416
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- fedoraproject:fedora
- linux:linux_kernel
- netapp:h300e_firmware
- netapp:h300s_firmware
- netapp:h410c_firmware
- netapp:h410s_firmware
- netapp:h500e_firmware
- netapp:h500s_firmware
- netapp:h700e_firmware
- netapp:h700s_firmware
- oracle:communications_cloud_native_core_binding_support_function
- oracle:communications_cloud_native_core_network_exposure_function
- oracle:communications_cloud_native_core_policy
- redhat:3scale
- redhat:enterprise_linux
- redhat:enterprise_linux_for_real_time
- redhat:enterprise_linux_for_real_time_for_nfv
- redhat:virtualization_host
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1999544
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/
- https://security.netapp.com/advisory/ntap-20220318-0009/